Mechanical pretreatments include grinding, brushing and polishing. These processes are generally performed on visible and accessible surfaces and result in embellishment of the aluminium surface. In contrast to other surface treatments, this embellished appearance remains visible after anodisation and plays a major part in determining the aesthetic quality of the anodised product.

Pretreatment

However, mechanical pretreatment of aluminium before anodisation only takes place on a limited scale. For example, in architecture, most aluminium is anodised without any mechanical pretreatment. Only sections with high aesthetic requirements – such as entrances to large buildings, shop windows and important indoor elements – are ground, brushed or polished.

Advantages

  • Attractive appearance retaining metal character
  • Durable, corrosion-resistant and colourfast
  • High solar reflectivity, Cool Buildings
  • LCA, expected lifespan of more than 80 years
  • 20 year guarantee on all colours Qualanod
  • 40 year guarantee on all colours BS 3987
  • Low maintenance
  • Easy to recycle (Cradle to Cradle)
  • Easy to reuse (Circular Economy